m-

Definitions

General English

General Science

  • (written as M)
    1 048 576, equal to 220

Astronomy

  • (written as M)
    M type stars are the coolest of all, with surface temperatures of less than 3500°. Such stars are cool enough to allow some molecules – rather than just isolated atoms – to exist in their outer layers. M stars tend to be orange in colour and Betelgeuse in Orion is the classic member of the class.
  • (written as M)
    Prefix for object designations in the Messier Catalogue

Economics

  • (written as M)
    In economic models involving international trade, M is usually chosen to represent imports, and X to represent exports, perhaps because I and E have too many other uses.

Electronics

  • A prefix which serves to produce derivative words pertaining to mobile communications concepts. For instance, m-business, or m-mail. It is an abbreviation of mobile.

Publishing

  • prefix
    (written as M)
    one million.
  • prefix
    (written as M)
    symbol for 1,048,576, used only in computer and electronic related applications.

Slang

  • noun
    (written as M)
    morphine. A drug users’ abbreviation.
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